C8051

Collagenase aus Clostridium histolyticum

Sigma Blend Type H, ≥1.0 FALGPA units/mg solid

• Synonym(e): Clostridiopeptidase A
• CAS-Nummer: 9001-12-1
• EC-Nummer: 3.4.24.3 (BRENDA, IUBMB)
• EG-Nummer: 232-582-9
• MDL-Nummer: MFCD00130830
• UNSPSC-Code: 12352204
• NACRES: NA.54

Eigenschaften

• Qualitätsniveau: 200
• Form: powder
• caseinase activity: ≥10 units/mg solid
• Spezifische Aktivität: ≥1.0 FALGPA units/mg solid
• Mol-Gew.: 68-130 kDa
• Lagertemp.: −20°C

Beschreibung

Anwendung

Collagenase from Clostridium histolyticum has been used:

• to harvest osteosarcoma 143B cells from collagen scaffold
• in tissue digestion of islets and carotid artery
• in the digestion of chorionic villi
• in enzymatic dissociation for ATP-based tumour chemosensitivity assay (ATP-TCA) in solid tumors

Biochem./physiol. Wirkung

Clostridium histolyticum produces two classes of collagenases. Clostridial collagenases are found to be highly effective than mammalian collagenases. It is capable of cleaving at multiple cleavage sites within the collagen triple helix. It is implicated in the bacterial invasion in gas gangrene.

Effective release of cells from tissue requires the action of both collagenase enzymes and the neutral protease. Collagenase is activated by four gram atom calcium (Ca²⁺) per mole enzyme. The culture filtrate is thought to contain at least 7 different proteases ranging in molecular weight from 68-130 kDa. The pH optimum is 6.3-8.8. The enzyme is typically used to digest the connective components in tissue samples to liberate individual cells. Collagenase treatment can cause some cells to die. Typically, concentrations varying from 0.1 to 5 mg/mL is used for digestion. The duration of reaction varyies from 15 minutes to several hours to yield a satisfactory efficiency of cell dissociation, without causing too much cell death. Krebs Ringer buffer with calcium and BSA is preffered and Zn²⁺ is required for activity. This enzyme is tested for the release of hepatocytes at approximately 1 mg/mL conc., in a total volume of 100 mL for each rat liver.

Collagenase wird durch vier Grammatom Calcium pro Mol Enzym aktiviert. Sie wird durch Ethylenglycol-bis-(beta-aminoethylether)-N, N, N′,N′-tetraessigsäure, β-Mercaptoethanol, Glutathion, Thioglycolsäure und 8-Hydroxychinolin gehemmt.

Einheitendefinition

Eine Collagen-Aufschlusseinheit (Collagen Digestion Unit, CDU) setzt Peptide aus Rinder-Achillessehnencollagen entsprechend der Ninhydrin-Anfärbung von 1,0 μmol Leucin in 5 Stunden bei pH 7,4 und 37 °C in Gegenwart von Calciumionen frei. Eine FALGPA-Hydrolyseeinheit hydrolysiert 1,0 μmol Furylacryloyl-Leu-Gly-Pro-Ala pro Minute bei 25 °C. Eine neutrale Protease-Einheit hydrolysiert die Caseinmenge, die eine Färbung entsprechend 1,0 μmol Tyrosin pro 5 Stunden bei pH 7,5 und 37 °C produziert. Eine Clostripain-Einheit hydrolysiert 1,0 μmol BAEE pro Minute bei pH 7,6 und 25 °C in Gegenwart von DTT.

Sicherheitshinweise

• Piktogramme: GHS08,GHS07
• Signalwort: Danger
• H-Sätze: H315,H319,H334,H335
• P-Sätze: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Faceshields, Gloves